Coffee maker



FIG. 1 is a front, right side perspective view of a coffee maker;

FIG. 2 is a back, left side perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top plan view thereof.

The broken lines and dotted lines shown in the Figures form no part of the claimed design. 

The ornamental design for a coffee maker, as shown and described. 